Leather-splitting machine



l (No Model.)

e. L. TYLER.

LEATHBRSPLITTING MAGHINE.v

Patented Feb. 7,1882.

UIL

ummm! Ffm HIIIIINIW UNITED STATES PATENT OFFICE.

GEORGE L. TYLER, OF LYNN, MASSACHUSETTS.

vLEATHER-SPLITTIKNG MACHINE.

SPECIFICATION forming party of Letters Patent No. 253,449, datedFebruary 7, 1882.

' Applicationmedaniy'ao,1881. (No model.)

To all whom it may concer-n Be it known that I, GEORGE L. TYLER, ofLynn, in the county of Essex and State ot' Massachusetts, have inventeda new and useful ImprovedfDevice for Adjusting the Feed- Bolls inaMachine for Splitting Leather, which device I will describe as follows,reference being made to the accompanyingdrawings, which form a part ofthis specification, like letters indicating like parts in the differentfigures thereof. v

Figure l of the drawings shows my invention in perspective.V Fig. 2 isafront elevation, Fig. 1,'illustrating the back of the machine whereon mydevice is placed. Fig. 3 is atransverse vertical section cut through thetwo feedrolls A, and represents the ri ght-hand end of the machine whenviewing Fig. l. Fig. 2 is not of special importance for showing theinvention itself, but is of use in that it makes a more completeillustration of the entire machine, so that the application of myinvention to the machine may be more fully understood.

This invention is an improvement to be applied to the machine describedand shown in Letters Patent granted to me dated May 24, l881,numbered242,07 9, and entitled Machine for Splitting Leather.7

This present invention consists in two adjusting-arms, one of which isattached to each of the feed-rolls A by placing said arms upon journalsat each end of each feed-roll. Each of said arms moves upon a pivot ateach end thereof, so that thel movement of the two ends of the two armsat each end of the machine is similar to theoperation of a pair ofshears. The adjustment of the aforesaid arms is regulated by twoequalizing-levers crossed at their centers and moving upon a pivotplaced at the point of crossing, said pivot forming a fulcrum.

- The tension of the feed-rolls is regulated by an adjustable ellipticspring attached to the upper adjusting the feed-rolls so that pieces ofleather of varied thickness shall be split exactly in the centerthereof, are omitted in this newA device, and the improvement used inplace of' said springs,which constitutes this invention, l will describeas follows:

. The two adjusting-arms B and B are placed over and upon the journalsa. ofthe upper and lower feed-rolls A, respectively. On one end of themachine the two adjusting-arms B and B are placed over the two journalsa in the ordina-ry manner; but in order to avoid making theadjusting-arms in two p arts and bolting them together, which would ofcourse weaken them, I think it better to attach said arms to saidjournals at one end of the machine in the manner shown at the two pointsla? in Fig. S--that is, by lea-ving the ends of t-he adj listing-armsopen, and merely slipping them over the journals a, as shown, for assaid arms 'do not turn with said journals, and as they are held 'inplace by the connecting-bars'G and H, as will be hereinafter fully setforth, no more secure fastening is necessary. I

There is a connecting-bar, G, at each end of the machine, the one at theright-hand end being illustrated in Figs. l and 3. Said bars are pivotedto the adjusting-arms B and B at the points g and g', respectively. Abar, H,'is placed at each end of the machine, and is bolted to the bar Gand to the frame of the machine D'at the points h and h', respectively.These two bars H hold the bars Gand with them the adjusting-arms B andB', thus preventing said adjusting-arms from moving up and down.

The two crossed equalizing-levers C are hung upon the pivot E, whichpivot acts as the fulcrum for both levers. The four elongated slots care placed over the frictionbolts c', so that the spreading andcontracting of the two equalizing-arms G are regulated and limited bythe length of the elongated slots c.

J is an elliptic spring, each end of which bears upon the adjusting-armB', and the center of said spring bears against the under side of thearm B at the center of what may be called the longitudinal7 portion ofsaid arm B-that is to say, the portion running longitudinally with thefeed-rolls A. This elliptic spring J is for giving tension to thefeed-rolls A, said tension being regulated by the adjusting-screw d.

IOO

The bolts f work sliding bearing-boxes within the frame at each end ofthe machine, and like bolts are placed on the under side of the machinefor the purpose of preventing the feedrolls A from coming together andstriking the knife L.

The two feed-rolls A, the adjustable knife L, the guide e. and the gearsand pulleys used for connecting and running said vfeed-rolls, all ofwhich are seen in these drawings, are the same as those described andshown in my former patent, and operate in the same manner as thereindescribed, so a description of them here is unnecessary. They areillustrated inthese drawings merely that the application of- Vmyimprovement to this machine before patented may be fully understood.

The operation of my invention is as follows: When a piece of leather isplaced between the feed-rolls Aat the front of the machine it is ofcourse important that said piece of leather should be split in thecenter thereof,

and it is to securethis end as perfectly as may arms B and B' willopenat the ends thereof which are attached to the feed-rolls, and will openat both ends vof the machine, and as said adjusting-arms are hung uponthe pivots g and g' the adjusting-.arms will open in a manner similar tothe opening-of a pair of' shears.

The crossed equalizingarms C insure the equal opening of both ends ofthe feed-rolls, and a piece of leather of a ythickness proportionate tothe length of the elongatedl slots c can be run between thel'eed-rollsA,suc`n thickness being obviously the maximum, and of courseanythinner piecethan said maximum can be run through the machine, theelliptic tension-spring J being attached to and Abearing against theadjusting-arm B and bearing upon theadjustingarm B'in the manner shownand described, and said adjustingfarms being attached to thefced-rollsand beingheld together and in place by the vbars Gr and H,respectively, it is evident that by turning the tension-screw d, andthus moving the tensionspring J, the tension of the feed-rolls A may beregulated.

What Iclaim as new, and desire to secure by Letters'Patent, is-

1. In a leather-splitting machine, two adjusting-arms attached to thejournals of two feed-rolls, said two adjusting-arms being held togetherby a connecting-bar at each end of the machine, and held firmly to theframe of the machine by a bar at cach end of the machine, saidadjusting-bars being adapted to spread and contract upon pivots, thewhole constructed and arranged substantiatly as described, and for theypurpose set forth.

2. In a leather-splitting machine, two equalizing-levers crossed attheir centers, and held upon a pivotat said centers, said pivot forminga fu-lcrnm for both levers, said levers bcinfg provided with anelongated slot at each end of each lever, each of said slots beingadapted to receive a friction-bolt, which friction-bolts are attached tothe adjusting-arms B and B', constructed and arranged substantially inthe manner described and shown, and for the purpose specified.

3. Inv a leather-splitting.machine, anelliptic tension-spring attachedto and adapted to bear against-the adjusting-arm B and to bear upon theadjusting-arms B', said spring being provided With an adjusting-screw,d, constructed and arranged substantially as describedfand shown, and`for the purpose set forth.

4. In a leather-splitting machine, in com-bination with the twofeed-rolls of a leathersplitting machine, the two adjusting-arms B andB', the connecting-bars G, with pivots g and g', `the bars H, held'bythe bolts h and h', the friction-boltsc', attached to said adjustingarmsB and B', the t-wo crossed equalizi-ng-levers C, provided with theelongated slots c and with the pivot E, and the elliptic spring J, `withthe adj nsting-screwvd, all constructed and arranged substantially asdescribed and shown, andforthe purposeset forth.

GEORGE L. TYLER.

Witnesses:

BENJ. K. PRENTIss, Jr., FRANCIS M. BOUTWELL.

